function toggle(e) {
  console.log('callback ran');
  e.target.classList.toggle('danger');
}

document.querySelector('button').addEventListener('click', toggle);

/*const posts = [
 { title: "帖⼦⼀", body: "这是帖⼦⼀" },
{ title: "帖⼦⼆", body: "这是帖⼦⼆" }
];
function getPosts() {
 setTimeout(() => {
 posts.forEach((post) => {
 const div = document.createElement("div");
 div.innerHTML = `<h3>${post.title}</h3><p>${post.body}</p>`;
 document.querySelector("#posts").appendChild(di
v);
 });
 }, 1000);
}
getPosts();
function createPost(post, cb) {
 setTimeout(() => {
 posts.push(post);
 cb();
 }, 2000);
}
createPost({ title: "帖⼦三", body: "这是帖⼦三" }, getPosts);
*/
